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Add Description Submenu

voloved edited this page Oct 20, 2023 · 11 revisions

By devolov

Goal: When pushing START in battle, show the move's stats and description in a sub-menu.
Most of the credit goes to TheXaman's tx_ui_battle_typing system. I just pulled the small parts that I needed to make it easy to see what the move's description and effects are.

pokeemerald_modern-0

-------------------------- include/constants/battle.h --------------------------
index 4dfa31cec8..b1ac50303e 100644
@@ -361,8 +361,12 @@
 #define B_WIN_VS_MULTI_PLAYER_4  20
 #define B_WIN_VS_OUTCOME_DRAW    21
 #define B_WIN_VS_OUTCOME_LEFT    22
 #define B_WIN_VS_OUTCOME_RIGHT   23
+#define B_WIN_MOVE_DESCRIPTION   24

 // The following are duplicate id values for windows that Battle Arena uses differently.
 #define ARENA_WIN_PLAYER_NAME      15
 #define ARENA_WIN_VS               16
------------------------------- src/battle_bg.c -------------------------------
index f24bb5d28a..9f76f1e0ff 100644
@@ -376,35 +376,44 @@ static const struct WindowTemplate sStandardBattleWindowTemplates[] =
     [B_WIN_VS_OUTCOME_RIGHT] = {
         .bg = 0,
         .tilemapLeft = 19,
         .tilemapTop = 2,
         .width = 7,
         .height = 2,
         .paletteNum = 0,
         .baseBlock = 0x00b0,
     },
+    [B_WIN_MOVE_DESCRIPTION] = {
+        .bg = 0,
+        .tilemapLeft = 1,
+        .tilemapTop = 47,
+        .width = 18,
+        .height = 6,
+        .paletteNum = 5,
+        .baseBlock = 0x0350,
+    },
     DUMMY_WIN_TEMPLATE
 };
@@ -376,35 +376,44 @@ static const struct WindowTemplate sBattleArenaWindowTemplates[] =
     [ARENA_WIN_JUDGMENT_TEXT] = {
         .bg = 0,
         .tilemapLeft = 2,
         .tilemapTop = 15,
         .width = 26,
         .height = 4,
         .paletteNum = 7,
         .baseBlock = 0x0090,
     },
+    [B_WIN_MOVE_DESCRIPTION] = {
+        .bg = 0,
+        .tilemapLeft = 1,
+        .tilemapTop = 47,
+        .width = 18,
+        .height = 6,
+        .paletteNum = 5,
+        .baseBlock = 0x0350,
+    },
     DUMMY_WIN_TEMPLATE
 };
 static const struct WindowTemplate sBattleArenaWindowTemplates[] =

------------------------ src/battle_controller_player.c ------------------------
index 6bf2b9d0cb..1d0317c010 100644
@@ -36,8 +36,10 @@
 #include "constants/party_menu.h"
 #include "constants/songs.h"
 #include "constants/trainers.h"
 #include "constants/rgb.h"
+#include "menu.h"
+#include "pokemon_summary_screen.h"
 
 static void PlayerHandleGetMonData(void);
 static void PlayerHandleSetMonData(void);
 static void PlayerHandleSetRawMonData(void);
@@ -104,8 +106,9 @@ static void MoveSelectionDestroyCursorAt(u8);
 static void MoveSelectionDisplayPpNumber(void);
 static void MoveSelectionDisplayPpString(void);
 static void MoveSelectionDisplayMoveTypeDoubles(u8 targetId, u8 targetIdPrev);
 static void MoveSelectionDisplayMoveType(void);
+static void MoveSelectionDisplayMoveDescription(void);
 static void MoveSelectionDisplayMoveNames(void);
 static void HandleMoveSwitching(void);
 static void SwitchIn_HandleSoundAndEnd(void);
 static void WaitForMonSelection(void);
@@ -185,8 +188,12 @@ static void (*const sPlayerBufferCommands[CONTROLLER_CMDS_COUNT])(void) =
     [CONTROLLER_ENDLINKBATTLE]            = PlayerHandleEndLinkBattle,
     [CONTROLLER_TERMINATOR_NOP]           = PlayerCmdEnd
 };
 
+static EWRAM_DATA bool8 sDescriptionSubmenu = 0;
+
 static const u8 sTargetIdentities[MAX_BATTLERS_COUNT] = {B_POSITION_PLAYER_LEFT, B_POSITION_PLAYER_RIGHT, B_POSITION_OPPONENT_RIGHT, B_POSITION_OPPONENT_LEFT};
 
 // unknown unused data
 static const u8 sUnused[] = {0x48, 0x48, 0x20, 0x5a, 0x50, 0x50, 0x50, 0x58};
@@ -497,9 +504,23 @@ static void HandleInputChooseMove(void)
         gPlayerDpadHoldFrames++;
     else
         gPlayerDpadHoldFrames = 0;
 
-    if (JOY_NEW(A_BUTTON))
+    if (JOY_NEW(A_BUTTON) && !sDescriptionSubmenu)
     {
         u8 moveTarget;
 
         PlaySE(SE_SELECT);
@@ -591,9 +578,9 @@ static void HandleInputChooseMove(void)
 
             gSprites[gBattlerSpriteIds[gMultiUsePlayerCursor]].callback = SpriteCB_ShowAsMoveTarget;
         }
     }
-    else if (JOY_NEW(B_BUTTON) || gPlayerDpadHoldFrames > 59)
+    else if ((JOY_NEW(B_BUTTON) || gPlayerDpadHoldFrames > 59)  && !sDescriptionSubmenu)
     {
         PlaySE(SE_SELECT);
         BtlController_EmitTwoReturnValues(BUFFER_B, 10, 0xFFFF);
         PlayerBufferExecCompleted();
@@ -607,8 +594,10 @@ static void HandleInputChooseMove(void)
             PlaySE(SE_SELECT);
             MoveSelectionCreateCursorAt(gMoveSelectionCursor[gActiveBattler], 0);
             MoveSelectionDisplayPpNumber();
             MoveSelectionDisplayMoveType();
+            if (sDescriptionSubmenu)
+                MoveSelectionDisplayMoveDescription();
         }
     }
     else if (JOY_NEW(DPAD_RIGHT))
     {
@@ -620,8 +609,10 @@ static void HandleInputChooseMove(void)
             PlaySE(SE_SELECT);
             MoveSelectionCreateCursorAt(gMoveSelectionCursor[gActiveBattler], 0);
             MoveSelectionDisplayPpNumber();
             MoveSelectionDisplayMoveType();
+            if (sDescriptionSubmenu)
+                MoveSelectionDisplayMoveDescription();
         }
     }
     else if (JOY_NEW(DPAD_UP))
     {
@@ -632,8 +623,10 @@ static void HandleInputChooseMove(void)
             PlaySE(SE_SELECT);
             MoveSelectionCreateCursorAt(gMoveSelectionCursor[gActiveBattler], 0);
             MoveSelectionDisplayPpNumber();
             MoveSelectionDisplayMoveType();
+            if (sDescriptionSubmenu)
+                MoveSelectionDisplayMoveDescription();
         }
     }
     else if (JOY_NEW(DPAD_DOWN))
     {
@@ -645,11 +638,13 @@ static void HandleInputChooseMove(void)
             PlaySE(SE_SELECT);
             MoveSelectionCreateCursorAt(gMoveSelectionCursor[gActiveBattler], 0);
             MoveSelectionDisplayPpNumber();
             MoveSelectionDisplayMoveType();
+            if (sDescriptionSubmenu)
+                MoveSelectionDisplayMoveDescription();
         }
     }
-    else if (JOY_NEW(SELECT_BUTTON))
+    else if (JOY_NEW(SELECT_BUTTON)  && !sDescriptionSubmenu)
     {
         if (gNumberOfMovesToChoose > 1 && !(gBattleTypeFlags & BATTLE_TYPE_LINK))
         {
             MoveSelectionCreateCursorAt(gMoveSelectionCursor[gActiveBattler], 29);
@@ -633,8 +654,13 @@ static void HandleInputChooseMove(void)
             BattlePutTextOnWindow(gText_BattleSwitchWhich, B_WIN_SWITCH_PROMPT);
             gBattlerControllerFuncs[gActiveBattler] = HandleMoveSwitching;
         }
     }
+    if (sDescriptionSubmenu)
+    {
+        if (JOY_NEW(START_BUTTON) || JOY_NEW(A_BUTTON) || JOY_NEW(B_BUTTON))
+        {
+            sDescriptionSubmenu = FALSE;
+            FillWindowPixelBuffer(B_WIN_MOVE_DESCRIPTION, PIXEL_FILL(0));
+            ClearStdWindowAndFrame(B_WIN_MOVE_DESCRIPTION, FALSE);
+            CopyWindowToVram(B_WIN_MOVE_DESCRIPTION, COPYWIN_GFX);
+            PlaySE(SE_SELECT);
+            MoveSelectionDisplayPpNumber();
+            MoveSelectionDisplayMoveType();
+        }
+    }
+    else if (JOY_NEW(START_BUTTON)) //AdditionalBattleInfo
+    {
+        sDescriptionSubmenu = TRUE;
+        MoveSelectionDisplayMoveDescription();
+    }
 }
 
 static u32 HandleMoveInputUnused(void)
 {
@@ -1574,8 +1600,54 @@ static void MoveSelectionDisplayPpNumber(void)

    BattlePutTextOnWindow(gDisplayedStringBattle, B_WIN_PP_REMAINING);
}
 
+static void MoveSelectionDisplayMoveDescription(void)
+{
+    struct ChooseMoveStruct *moveInfo = (struct ChooseMoveStruct*)(&gBattleBufferA[gActiveBattler][4]);
+    u16 move = moveInfo->moves[gMoveSelectionCursor[gActiveBattler]];
+    u16 pwr = gBattleMoves[move].power;
+    u16 acc = gBattleMoves[move].accuracy;
+    s16 pri = gBattleMoves[move].priority;
+    u8 pwr_num[3], acc_num[3], pri_num[3], i;
+    u8 pwr_desc[7] = _("PWR: ");
+    u8 acc_desc[7] = _("ACC: ");
+    u8 pri_desc[7] = _("PRI: ");
+    u8 pwr_start[] = _("{CLEAR_TO 0x03}");
+    u8 acc_start[] = _("{CLEAR_TO 0x38}");
+    u8 pri_start[] = _("{CLEAR_TO 0x6D}");
+    LoadMessageBoxAndBorderGfx();
+    DrawStdWindowFrame(B_WIN_MOVE_DESCRIPTION, FALSE);
+    if (pwr < 2)
+        StringCopy(pwr_num, gText_BattleSwitchWhich5);
+    else
+        ConvertIntToDecimalStringN(pwr_num, pwr, STR_CONV_MODE_LEFT_ALIGN, 3);
+    if (acc < 2)
+        StringCopy(acc_num, gText_BattleSwitchWhich5);
+    else
+        ConvertIntToDecimalStringN(acc_num, acc, STR_CONV_MODE_LEFT_ALIGN, 3);
+    ConvertIntToDecimalStringN(pri_num, pri, STR_CONV_MODE_LEFT_ALIGN, 2);
+    StringCopy(gDisplayedStringBattle, pwr_start);
+    StringAppend(gDisplayedStringBattle, pwr_desc);
+    StringAppend(gDisplayedStringBattle, pwr_num);
+    StringAppend(gDisplayedStringBattle, acc_start);
+    StringAppend(gDisplayedStringBattle, acc_desc);
+    StringAppend(gDisplayedStringBattle, acc_num);
+    StringAppend(gDisplayedStringBattle, pri_start);
+    StringAppend(gDisplayedStringBattle, pri_desc);
+    StringAppend(gDisplayedStringBattle, pri_num);
+    StringAppend(gDisplayedStringBattle, gText_NewLine);
+    StringAppend(gDisplayedStringBattle, gMoveDescriptionPointers[move -1]);
+    BattlePutTextOnWindow(gDisplayedStringBattle, B_WIN_MOVE_DESCRIPTION);
+    CopyWindowToVram(B_WIN_MOVE_DESCRIPTION, COPYWIN_FULL);
+}
+
 static void MoveSelectionCreateCursorAt(u8 cursorPosition, u8 baseTileNum)
 {
     u16 src[2];
     src[0] = baseTileNum + 1;
----------------------------- src/battle_message.c -----------------------------
index 0835dda70c..4949575d00 100644
@@ -1784,9 +1784,9 @@ static const struct BattleWindowText sTextOnWindowsInfo_Normal[] =
         .fgColor = TEXT_COLOR_WHITE,
         .bgColor = TEXT_COLOR_TRANSPARENT,
         .shadowColor = TEXT_COLOR_GREEN,
     },
+    [B_WIN_MOVE_DESCRIPTION] = {
+        .fillValue = PIXEL_FILL(0xE),
+        .fontId = FONT_NARROW,
+        .x = 0,
+        .y = 1,
+        .letterSpacing = 0,
+        .lineSpacing = 0,
+        .speed = 0,
+        .fgColor = TEXT_DYNAMIC_COLOR_4,
+        .bgColor = TEXT_DYNAMIC_COLOR_5,
+        .shadowColor = TEXT_DYNAMIC_COLOR_6,
+    },
 };

 static const struct BattleWindowText sTextOnWindowsInfo_Arena[] =
 {
@@ -1784,9 +1784,9 @@ static const struct BattleWindowText sTextOnWindowsInfo_Arena[] =
         .fgColor = TEXT_COLOR_DARK_GRAY,
         .bgColor = TEXT_COLOR_WHITE,
         .shadowColor = TEXT_COLOR_LIGHT_GRAY,
     },
+    [B_WIN_MOVE_DESCRIPTION] = {
+        .fillValue = PIXEL_FILL(0xE),
+        .fontId = FONT_NARROW,
+        .x = 0,
+        .y = 1,
+        .letterSpacing = 0,
+        .lineSpacing = 0,
+        .speed = 0,
+        .fgColor = TEXT_DYNAMIC_COLOR_4,
+        .bgColor = TEXT_DYNAMIC_COLOR_5,
+        .shadowColor = TEXT_DYNAMIC_COLOR_6,
+    },
 };

Add this logic into string_util.c to allow for negative numbers to be shown when displaying the move's priority.

----------------------------- gflib/string_util.c -----------------------------
index 8d969d1bf..88fd34164 100644
u8 *ConvertIntToDecimalStringN(u8 *dest, s32 value, enum StringConvertMode mode, u8 n)
{
    enum { WAITING_FOR_NONZERO_DIGIT, WRITING_DIGITS, WRITING_SPACES } state;
    s32 powerOfTen;
    s32 largestPowerOfTen = sPowersOfTen[n - 1];
+   bool8 addNegSign = FALSE;

+   if (value < 0)
+   {
+       addNegSign = TRUE;
+       value = abs(value);
+   }

    state = WAITING_FOR_NONZERO_DIGIT;

    if (mode == STR_CONV_MODE_RIGHT_ALIGN)
        state = WRITING_SPACES;

    if (mode == STR_CONV_MODE_LEADING_ZEROS)
        state = WRITING_DIGITS;

    for (powerOfTen = largestPowerOfTen; powerOfTen > 0; powerOfTen /= 10)
    {
        u8 c;
        u16 digit = value / powerOfTen;
        s32 temp = value - (powerOfTen * digit);

        if (state == WRITING_DIGITS)
        {
            u8 *out = dest++;

+           if (addNegSign)
+           {
+               addNegSign = FALSE;
+               *out = CHAR_HYPHEN;
+               out = dest++;
+           }
            if (digit <= 9)
                c = sDigits[digit];
            else
                c = CHAR_QUESTION_MARK;

            *out = c;
        }
        else if (digit != 0 || powerOfTen == 1)
        {
            u8 *out;
            state = WRITING_DIGITS;
            out = dest++;

+            if (addNegSign)
+            {
+                addNegSign = FALSE;
+                *out = CHAR_HYPHEN;
+                out = dest++;
+            }
            if (digit <= 9)
                c = sDigits[digit];
            else
                c = CHAR_QUESTION_MARK;

            *out = c;
        }
        else if (state == WRITING_SPACES)
        {
            *dest++ = CHAR_SPACER;
        }

        value = temp;
    }

    *dest = EOS;
    return dest;
}

If you're using make and not make modern, you'll need to add the battle_controller_player.o to sym_ewram.txt to add sDescriptionSubmenu into EWRAM.

----------------------------- sym_ewarm.txt -----------------------------
	.include "src/pokenav.o"
	.include "src/pokenav_list.o"
	.include "src/menu_specialized.o"
	.include "src/faraway_island.o"
	.include "src/trainer_hill.o"
	.include "src/rayquaza_scene.o"
+	.include "src/battle_controller_player.o"
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